Answer:
[tex]10\ \text{m/s}[/tex]
Explanation:
[tex]s[/tex] = Displacement = [tex]100\ \text{m}[/tex]
[tex]t[/tex] = Time taken = [tex]10\ \text{s}[/tex]
Velocity is given by
[tex]v=\dfrac{s}{t}\\\Rightarrow v=\dfrac{100}{10}\\\Rightarrow v=10\ \text{m/s}[/tex]
The person is able to run at a speed of [tex]10\ \text{m/s}[/tex] in order to complete the race in the given time.
why are north and south poles important to magnets
Answer:
All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field.
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an EM wave has a speed of 3 x 10^8 m/s and a frequency of 5.0 x 10 ^7 Hz. what is the wavelength of the EM wave
0.17m
1.5 x 10 ^ 16m
6.0m
0.06 m
30 POINTS
Answer:
i think it is 0.06 but im not sure sorry if im wrong
Explanation:
I don't know what kind of wave this is.... My bad
Answer:
Compresion wave
Explanation:
A person drops a ball off the top of a 10 story building. What statement below best describes the movement of the ball?
Most helpful Answer~
There are no options~
Anyway If the ball is of bad quality it will get deflated/ or strike out.
' The must reasonable thing that could happen is that the ball will bounce'
*Smile* :)
A man walks 200m for 10s to the west then continue in the same directions for another 100m for another 10s. what is the velocity of the man?
Answer:
15m/s
Explanation:
velocity = displacement/time
= (200+100)/20 = 300/20 = 15m/s
The photograph shows one of the boats in a science club's toy boat race. All the boats were powered by identical
rubber bands. Judges used stopwatches to time how long each rubber band took to unwind. The table shows some
of the data the judges collected.
Answer: Boat P
Explanation:
Multiple all of them mass times acceleration and which ever one was the greatest was the answer. Which was Boat P 0.2436
The minimum time taken to unwind the rubberband is by boat P.
The highest amount of force to unwind the rubberband is generated by boat P.
Force, Mass and AccelerationThe table shows all the mass, acceleration and time of each boat. To unwind the rubber band, the required force can be calculated as given below.
Force = Mass [tex]\times[/tex] Acceleration
For boat N, force is [tex]f_n = 0.125\times 1.6 = 0.2 \;\rm N[/tex]
For boat P, force is [tex]f_p = 0.116\times 2.1 = 0.24 \;\rm N[/tex]
For boat Q, force is [tex]f_q = 0.130\times 1.0 = 0.13 \;\rm N[/tex]
For boat R, force is [tex]f_r = 0.118\times 1.8 = 0.21 \;\rm N[/tex]
Hence we can conclude that the highest amount of force to unwind the rubberband is generated by boat P.
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an objest with the mass of 2 kg is accelerated at 4 m/s2. the net force acting on the object is
a) 2N
b) 20N
c) 5N
d) 10N
When a substance freezes, its atoms become locked in place so they do not move from one position to another. Therefore, any substance that is frozen is a
plasma.
gas.
liquid.
solid.
When a substance freezes, its atoms become locked in place so they do not move from one position to another. Therefore, any substance that is frozen is a solid. Hence, option (D) is correct.
What is solid?One of the four basic states of matter is solid (the others being liquid, gas, and plasma). The least solid molecules are those that are tightly packed together and make up solids.
A solid is distinguished by its structural rigidity and resistance to external forces. A solid substance, unlike a liquid, does not flow to conform to the shape of its container or, like a gas, expand to cover the entire space. A solid's atoms are connected to one another either in a regular geometric lattice (such as that found in metals and common ice), or in an asymmetrical manner (an amorphous solid such as common window glass).
Therefore, any substance that is frozen is a solid.
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What type of force causes your car to move?
Answer:
frictional force
Explanation:
Name two careers that use gravity as the main part of the job.
Answer:
:Meterology, Seismology,
What kind of injuries may affect a person's stability?
plz help me
Explanation:
a brain injury, a concussion, spinal cord injury, and a repetitive strain injury
Which moon phase comes before the phase in this picture?
A boiler is being used to heat water. The graph shows the temperature of
the water every 5 minutes.
a. What state is the water in between points Q and R?
b. At which point does the water begin to boil?
c. What state is the water in at 110°c?
Answer:
a. Liquid state
b. At point R. The physical state of water at its boiling point temperature of 100 degree Celsius will be both liquid state as well as gaseous state.
c. at 110 degrees it is in gaseous state
A negative charge of -3.0 x 10^-5 C is placed 0.35 m from a positive charge of 9.0 x 10^-5 C. What is the force between the two charges
Answer:
the force between the two charges is 198.37 N
Explanation:
Given;
charge of the first particle, Q₁ = -3 x 10⁻⁵ C
charge of the second particle, Q₂ = 9.0 x 10⁻⁵ C
distance between the two charges, r = 0.35 m
The force between the two charges is calculated from Coulomb's law;
[tex]F = \frac{kQ_1Q_2}{r^2}[/tex]
where k is Coulomb's constant = 9 x 10⁹ Nm²/C²
[tex]F = \frac{(9\times 10^9)(3.0\times 10^{-5})(9\times10^{-5} )}{0.35^2} \\\\F = 198.37 \ N[/tex]
Therefore, the force between the two charges is 198.37 N
ii) One of the containers is wide and shallow. The other container is narrow and deep
Predict which container has the greater rate of cooling. Explain your answer.
Standing passengers on trains often hold on to rails or handles because as the train starts and stops their bodies want to stay at rest or in motion. This is all due to ______
a
Newton's 3rd Law of motion that for every action there is an equal and opposite reaction
b
Newton's 2nd Law of motion that an object at rest stays at rest or in motion until acted on by an unbalanced force
c
Newton's 1st Law that an object in motion stays in motion and an object at rest stays at rest until acted on by an unbalanced force
d
Newton's 1st Law that motion only exists in friction less environments.
Explanation:
Newton's 2nd law of motion..option b
What helps a race car to not slide all over the race track?
Answer: Gently reduce pressure on brakes – if on ice, push in the clutch to let the wheels turn freely.
Turn the steering wheel quickly – look and steer in the direction you want to go.
Counter-steer – as the vehicle gets back on course, counter-steer to avoid skidding in the opposite direction.
Explanation:
Which type of radio broadcast has a greater broadcast range, AM or FM? Explain.
What is the car's average velocity between "O" and "A"
Explanation:
incomplete question graph / fig is not available
If 45,000 Joules of work done in 90 seconds results in how much power?
Para el siguiente conjunto de medidas, calcule EL ERROR RELATIVO PORCENTUAL: 1.34 m, 1.35 m, 1.37 m y 1.36 m
Answer:
Ver explicacion abajo
Explanation:
En este caso para poder calcular el error relativo porcentual, es necesario calcular primero el error absoluto, que se calcula de la siguiente forma:
Error absoluto = Resultado exacto - aproximación
Sin embargo, no tenemos el resultado exacto de las medidas, pero podriamos conocerlo tomando el promedio de estas medidas y este es el que tomaremos como el verdadero resultado de las medidas:
Promedio de medidas = 1.34 + 1.35 + 1.37 + 1.36 / 4
Promedio de medidas = 1.355 m
Ya que tenemos el promedio, podemos calcular el error absoluto de cada medida y luego el error relativo porcentual:
Ea1 = 1.355 - 1.34 = 0.015
Ea2 = 1.355 - 1.35 = 0.005
Ea3 = 1.37 - 1.355 = 0.015
Ea4 = 1.36 - 1.355 = 0.005
Ya que tenemos los 4 errores absolutos, es posible calcular el porcentual:
%error relativo = (Error absoluto / resultado exacto) * 100
Aplicando la expresión con cada uno de los valores tenemos:
%Er1 = (0.015/1.34) * 100 = 1.12%
%Er2 = (0.005/1.35) * 100 = 0.37%
%Er3 = (0.015/1.37) * 100 = 1.09%
%Er4 = (0.005/1.36) * 100 = 0.37%
Espero que te sirva.
HELP I GIVE BRAINLIST
which of the following is a abiotic factor ?
A ) pH level of water
B ) Coral Reef
C ) fish
D ) seaweed
Answer:
it's A
Explanation:
it's A because the ph level of water is just the level of the water if it's acidic or just a base
What are the dangers of a hurricane and how do you stay safe during the hurricane?
Answer:
go to the vault
Explanation:
A7 lb bowling ball accelerates at a rate of 7 m/s2. If the net force on the bowling ball is
tripled, what will be its new acceleration? (1 point)
a. 2.3 m/s2
b. 7 m/s2
c. 14 m/s2
d. 21 m/s2
Answer: c
Explanation:
If the net force on the bowling ball is tripled, its new acceleration is 21 m/s². The correct option is d.
What is force?The force is the action of push or pull which can move or stop the object.
The initial force is F = mass x acceleration
F = 3.17515 kg x 7 m/s²
F = 22.23 N
When the net force is tripled, the new acceleration will b e
3 x F =m x a'
3 x 22.23 = 3.17515 x a'
a' = 21.003 m/s²
Thus, the new acceleration is 21 m/s². The correct option is d.
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What is the smallest, most basic level of organization in an animal or
plant?
Answer:
hhmmmmmhmmmm hmhmmmm hmmm yeah i got nothing
Explanation:
Wave 1
a) How many waves are there in this wave train?
b) Wavelength cm c) Amplitude
cm
Answer:
see below
Explanation:
a wave means one complete wave which is 1 period
so a) 5 complete waves
wavelength is the shortest distance between any two points in phase
so wavelength = 1 CM
amplitude of a wave is the maximum displacement of a particle from its rest position
so amplitude = 3 CM
hope this helps
TIME REMAINING
03:53:22
Which two factors are used to calculate the kinetic energy of an object?
O gravity and velocity
O velocity and mass
mass and volume
O volume and height
Answer:
velocity and mass
Explanation:
Calculate acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds.
Answer:
acceleration = 0.013 m/s²
Explanation:
formula for acceleration is
a = (v-u) / t
a= (0.7-0.3) / 30
= 0.013
The acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²
Acceleration is defined as the change in velocity of a body with respect to time. Mathematically:
[tex]a=\frac{v-u}{t}[/tex]
v is the final speed = 0.7m/s
u is the initial speed = 0.3m/s
t is the time taken = 30seconds
Substitute the given values into the formula:
[tex]a=\frac{0.7-0.3}{30}\\a=\frac{0.4}{30}\\a = 0.0133m/s^2[/tex]
Hence the acceleration of a turtle going from 0.3 m/s to 0.7 m/s in 30 seconds is 0.0133m/s²
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How much time does it take to change the momentum by 350 Ns with a 15 N force?
What is the mass of an object that requires 150N of force in order to accelerate it at 10m/s 2
Answer:
15kg
Explanation:
Acceleration = 10 m/s^2
Force = 150 N
Force = mass * acceleration
mass = force / acceleration
mass = 150 / 10
mass = 15 kg